Windshield wiper's not working properly

1995 BUICK PARK AVENUE
160,000 MILES
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TOM JAGER
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  • 2 POSTS
My windshield wipers will not work first thing in the morning but in the afternoon they work fine?
Aug 20, 2020 at 3:39 PM
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ASEMASTER6371
  • CERTIFIED EXPERT
  • 52,796 POSTS
Good afternoon,

This sounds like the motor itself.

https://www.2carpros.com/articles/how-to-replace-a-windshield-washer-pump

I attached a wiring diagram for you to view.Do you have a voltmeter or test light for some tests?

https://www.2carpros.com/articles/how-to-check-wiring

Check the purple wire for power when the motor will not work in the morning.

Roy
Aug 20, 2020 at 3:58 PM
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TOM JAGER
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  • 2 POSTS
There is no voltage at the motor in the morning.
Aug 21, 2020 at 10:24 PM
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ASEMASTER6371
  • CERTIFIED EXPERT
  • 52,796 POSTS
Okay, that voltage comes from the switch itself. Sounds like you need to replace the wiper switch.

Roy

1. Remove steering wheel as described in Steering and Suspension/Steering/Steering Wheel/Service and Repair.
2. Using lock plate compressor tool No. J 23653-C, or equivalent, push down shaft lock and remove shaft lock retaining ring.
3. Remove shaft lock, turn signal cancelling cam assembly, upper bearing spring, upper bearing inner race seat and inner race.
4. Set turn signal to right turn position, then remove multi-function lever and hazard knob assembly, Fig. 12.
5. Remove signal switch arm retaining screw and switch arm.
6. Remove turn signal switch attaching screws, then signal switch as follows:
a. Disconnect turn signal switch connector from bulkhead connector and wire harness strap, Fig. 13
b. Disconnect E and C module connector from signal switch harness.
c. Remove wiring protector, then nut holding ground wire to stud.
d. Gently pull wire harness through column.
7. Reverse procedure to install.
Aug 22, 2020 at 4:07 AM